: No 4th gear...

01-29-05, 09:54 PM
Noticed the little princess was getting lousy gas mileage; ran through the PCM data to discover it wasn't reaching 4th gear; I can command 4th gear in the Override mode but it won't shift there on its own...haven't checked the trans fluid yet; just replaced the A-B solenoids a few months ago...any thoughts (besides trading, at 136k)? Thanks!

01-30-05, 01:21 PM
Sounds like you are saying you can force an upshift using overrides and the trans upshifts. If that is the case then I would check the value for trans temp, TPS and VSS to see if they make sense. Sounds like a PCM, wiring, sensor problem that causes 4th not to be commanded.



01-30-05, 03:54 PM
Thanks for the suggestions! Just checked the fluid which is full and a nice color but foamy...will update...

01-30-05, 05:39 PM
Trans temp was about 43 (engine temp about 199, outside temp about 30F); Transaxle Pressure Switch reads correctly; Vehicle Speed Sensor reads a bit slower than the speedo...I'm leaning (praying) toward a loose connector due to sudden warming we've had here...